Museo Nacional Thyssen-Bornemisza, Madrid

Beautiful drawings! As a person who is "not that much into art" I had a lot of fun and was very impressed. From what I read, they have the second biggest private collection in the world, with more than 1600 paintings/drawings. I saw different (styles?) of painting and it was beautiful. Take in account that the museum is big, and that for some of the paintings there is an explanation, so I recommend to go with headphones.

I liked this museum a lot because, apart from the wide variety of paintings it has, there is also a companion app called "Second Canvas Thyssen Museum" which lets you see very high resolution pictures of quite a few paintings and also tells you all about its history and characteristics. At the time I was there, there was a temporary exhibition about Georgia O'Keeffe, which was also very nice and informing. All in all, a cool museum that has also been able to incorporate some modern features to its experience. I would recommend that you visit even if you "aren't really a paintings kind of person" (like me) because there are certainly some paintings which are worth visiting on their own.